我正在用pgbench进行性能测试，以评估使用Glusterfs和Postgresql的影响。我用3块砖/服务器创建了一个gluster复制卷：
Volume Name: gv0
Type: Replicate
Volume ID: a7e617ec-c564-4a01-aec9-807e87fcccb3
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: 10.112.76.37:/export/sdb1/brick
Brick2: 10.112.76.38:/export/sdb1/brick
Brick3: 10.112.76.39:/export/sdb1/brick
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: off
之后我配置了postgres来使用音量gv0。在低压力下一切正常。但是，当负载增加时，会发生以下错误：
client 14 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
client 7 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
client 5 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
client 6 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
client 8 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
client 0 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
client 11 aborted in state 9: ERROR: unexpected data beyond EOF in block 0 of relation base/16384/16503
HINT: This has been seen to occur with buggy kernels; consider updating your system.
知道造成这种情况的原因是什么？
Gluster不支持“结构化数据”，如GlusterFS Install Guide所述：
Gluster不支持所谓的“结构化数据”，即实时SQL数据库。当然，使用Gluster来备份和恢复数据库会很好 - 当使用至少16KB的文件大小（大约128KB左右的最佳位置）时，Gluster传统上更好。
我的猜测是Gluster可以在负载较小时跟上复制，但是当负载增加到某个点以上时可能会挣扎，可能导致裂脑错误。
您可以使用命令gluster volume heal <volume_name> info split-brain查看裂脑中的文件，或者使用gluster volume heal <volume_name> info查看需要修复的所有文件。